Ponceau S

C22H12N4Na4O13S4CAS 6226-79-5760.55 g/mol

O−SOONNNNHOSO−OOSO−OOSO−OONa+Na+Na+Na+
AzoPhenolSulfonic acid

Properties

Molecular formula
C22H12N4Na4O13S4
Molar mass
760.55 g/mol
Exact mass
759.8874 Da
logP
2.84Crippen estimate
Polar surface area
287.1 Ų
H-bond donors / acceptors
5 / 13
Rotatable bonds
8

Hazards

No GHS classification is on file for this compound. That is not evidence that it is harmless.

Identifiers

CAS number
6226-79-5
SMILES
[O-]S(=O)(=O)c1ccc(N=Nc2ccc(N=Nc3c(O)c(S([O-])(=O)=O)cc4cc(S([O-])(=O)=O)ccc34)c(S([O-])(=O)=O)c2)cc1.[Na+].[Na+].[Na+].[Na+]
InChI

The InChI we hold for this record describes the parent acid and the metal separately rather than the salt above, so it is not shown here.

Weigh it out

Type any one amount. The others follow from the molar mass.

Names and synonyms

6 names
  • 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-[2-[2-sulfo-4-[2-(4-sulfophenyl)diazenyl]phenyl]diazenyl]-, sodium salt (1:4)
  • C.I. Acid Red 112, tetrasodium salt
  • 2,7-Naphthalenedisulfonic acid, 3-hydroxy-4-[[2-sulfo-4-[(4-sulfophenyl)azo]phenyl]azo]-, tetrasodium salt
  • C.I. Acid red 112
  • Ponceau S extra
  • Ponceau red S

Work with Ponceau S

Similar compounds

Tanimoto similarity of circular fingerprints over the whole catalogue.

Elsewhere